CN104551674A - Computer hard disk shelf forming method - Google Patents
Computer hard disk shelf forming method Download PDFInfo
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- CN104551674A CN104551674A CN201410845950.4A CN201410845950A CN104551674A CN 104551674 A CN104551674 A CN 104551674A CN 201410845950 A CN201410845950 A CN 201410845950A CN 104551674 A CN104551674 A CN 104551674A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
- G06F1/187—Mounting of fixed and removable disk drives
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- Mechanical Engineering (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
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- General Engineering & Computer Science (AREA)
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- Punching Or Piercing (AREA)
Abstract
The invention discloses a computer hard disk shelf forming method. The method comprises the first step of obtaining a fine blanked workblank by use of a fine blanking method of an individual mold, the second step of obtaining a first semi-finished product by virtue of first pressing forming, the third step of annealing, the fourth step of obtaining a second semi-finished product by virtue of second pressing forming, the fifth step of obtaining a third semi-finished product by virtue of third pressing forming, the sixth step of performing fine punching and blanking on the third semi-finished product, the seventh step of stress relief annealing, and the eighth step of machining the annealed fourth semi-finished product, thereby obtaining the formed computer hard disk shelf. The method is capable of guaranteeing the formed shape and the accuracy of the disk shelf by virtue of multiple pressing gradual forming.
Description
Technical field
The present invention relates to a kind of manufacturing process, have and relate to a kind of computer hard disc rack for disc manufacturing process.
Background technology
Rack for disc is functional features important in computer hard disc parts, of a great variety, has higher requirement to thickness deviation, form and position tolerance, the depth of parallelism, profile tolerance, surface roughness, and the difficulty of processing of local tapering is large.
See Fig. 1, the structure of existing rack for disc is: it comprises arc rack for disc main body 1-3, the outline of described arc rack for disc main body 1-3 is provided with multiple irregular boss 1-1, forms multiple small arc-shaped 1-5 between described arc rack for disc main body 1-3 and boss 1-1; The inner side of described arc rack for disc main body 1-3 is the arc body 1-4 of band tapering; Described arc body 1-4 is thinning gradually from inside to outside, overall in tapering; Described boss 1-1 is provided with breach 1-7; Described arc rack for disc main body 1-3 is provided with circular hole 1-6, and described boss 1-1 is provided with several circular holes or profiled holes 1-2, boss 1-1 thickness 4.35 ± 0.0125mm, arc rack for disc main body 1-3 thickness 1.58 ± 0.0125mm.
Existing rack for disc selects soft annealing almag: AL6061-T6 material, and hardness HV40-50 expects thick 5mm.Finished product thickness tolerance ± 0.0125mm, form and position tolerance 0.04mm, depth of parallelism 0.025mm, profile tolerance 0.04mm, surface roughness Ra 0.2mm.Now adopt the smart method production almag rack for disc rushing blank, upsetting pressure shaping, smart punching and blanking, machined and combine, the method is applicable to batch production, and stock utilization is high.In order to make rack for disc finished product have high-quality, before smart punching and blanking, machined forming process, essence rushes blank (expecting thick 5mm), need be shaped through upsetting pressure, obtain upsetting pressure part, upsetting pressure part boss place thickness 5.05 ± 0.05mm, plane (arc upsetting pressure part main body) thickness 2 ± 0.04mm.But almag plastotype poor processability, be shaped according to a upsetting pressure, work hardening is serious, and forming quality is difficult to ensure card.
Summary of the invention
The object of the present invention is to provide a kind of computer hard disc rack for disc manufacturing process, the method, by the repeatedly gradual shaping of upsetting pressure, ensure that rack for disc shaping form and precision.
The present invention is achieved in that
A kind of computer hard disc rack for disc manufacturing process, it comprises the steps:
The first step, essence rush blank
Adopt the precision punching method of one-piece moule to obtain essence and rush blank, described essence is rushed blank and is comprised bracket-hairs blank main body, the outline of described bracket-hairs blank main body there is blank obform body, between described bracket-hairs blank main body and described blank obform body, has blank small arc-shaped;
Second step, first time upsetting pressure are shaped
First female die for forming and first forming terrace die of computer hard disc rack for disc upsetting pressure shaping dies are installed, essence is rushed the first die cavity that blank is placed in the first female die for forming, under pressure, essence rushes blank upsetting pressure in the die cavity of computer hard disc rack for disc upsetting pressure shaping dies, and upsetting pressure obtains the first semi-finished product after being shaped;
Described first semi-finished product comprise the first arc semi-finished product main body, the outline of described first arc semi-finished product main body has the first semi-finished product boss, has the first semi-finished product small arc-shaped between the first arc semi-finished product main body and the first semi-finished product boss;
3rd step, annealing
Be placed in heat-treatment furnace by first semi-finished product and carry out annealing in process, annealing process is that 250 DEG C-300 DEG C insulations are warmed up to 300 DEG C-400 DEG C insulation 5-9 hour after 1-3 hour;
4th step, second time upsetting pressure are shaped
Take out the first female die for forming and first forming terrace die of computer hard disc rack for disc upsetting pressure shaping dies, second female die for forming and the second forming terrace die are installed, the first semi-finished product after annealing in process are placed in the second die cavity of the second female die for forming, under pressure, the upsetting pressure in the die cavity of computer hard disc rack for disc upsetting pressure shaping dies of the first semi-finished product after annealing, upsetting pressure obtains the second semi-finished product after being shaped;
Described second semi-finished product comprise the second arc semi-finished product main body, the outline of described second arc semi-finished product main body has the second semi-finished product boss, has the second semi-finished product small arc-shaped between the second arc semi-finished product main body and the second semi-finished product boss;
5th step, third time upsetting pressure are shaped
Take out the second female die for forming and second forming terrace die of computer hard disc rack for disc upsetting pressure shaping dies, 3rd female die for forming and the 3rd forming terrace die are installed, second semi-finished product are placed in the 3rd die cavity of the 3rd female die for forming, under pressure, the upsetting pressure in the die cavity of computer hard disc rack for disc upsetting pressure shaping dies of second semi-finished product, upsetting pressure obtains the 3rd semi-finished product after being shaped;
Described 3rd semi-finished product comprise the 3rd arc semi-finished product main body, the outline of described 3rd arc semi-finished product main body there is the 3rd semi-finished product boss, there is the 3rd semi-finished product small arc-shaped between 3rd arc semi-finished product main body and the 3rd semi-finished product boss, the 3rd semi-finished product boss has the 3rd semi-finished product breach;
6th step, smart punching, blanking are carried out to the 3rd semi-finished product
3rd semi-finished product obtain the 4th semi-finished product after smart punching, blank-forming;
Described 4th semi-finished product comprise the 4th arc semi-finished product main body, the outline of described 4th arc semi-finished product main body there is the 4th semi-finished product boss, the 4th semi-finished product small arc-shaped is had between 4th arc semi-finished product main body and the 4th semi-finished product boss, 4th semi-finished product boss there is the 4th semi-finished product breach, 4th arc semi-finished product main body there is the 4th semi-finished product circular hole, the 4th semi-finished product boss has circular hole or the 4th semi-finished product irregularly-shaped hole;
7th step, stress relief annealing
4th semi-finished product carry out stress relief annealing process in heat-treatment furnace, and annealing process is holding temperature is 200 DEG C-300 DEG C, temperature retention time 80-120 minute;
8th step, by annealing after the 4th semi-finished product carry out machined
Adopt NC machining center machine tool to carry out finish-milling processing to the 4th semi-finished product, obtain the rack for disc computer hard disc rack for disc after being shaped.
The method that the present invention adopts essence punching, three upsetting pressure shapings, machineds combine produces almag computer hard disc rack for disc, not only ensure that quality, is applicable to batch production, but also makes the utilization rate of material high, saved the cost of computer hard disc rack for disc;
The present invention rushes blank in essence and carries out selecting kerosene to make lubricant in the operation of smart punching, blanking to the 3rd semi-finished product, is conducive to the cleaning of later process;
Three steps that the present invention adopts the upsetting pressure of three width moulds corresponding computer hard disc rack for disc to be shaped, only need change corresponding forming terrace die and female die for forming, just can realize the gradual shaping of repeatedly upsetting pressure, ensure that shaping form and precision, reduce computer hard disc rack for disc manufacturing cost;
The present invention adopts three upsetting pressures to be shaped, and the upset force be shaped than a upsetting pressure is little; Reduce pressure by reducing each upset force, thus reduce work hardening, computer hard disc rack for disc is easily shaped, and forming effect is good;
Be provided with annealing and stress relief annealing operation in the present invention, eliminate stress, reduce hardness, be convenient to the shaping of computer hard disc rack for disc;
Be provided with insert in female die for forming in the present invention, the height after insert assembling is lower than the height 5-10mm of female die for forming main body, and what be convenient to upsetting pressure shaping picks and places workpiece; Insert is provided with groove, is convenient to taking-up when insert assembling and maintenance.Female die for forming and forming terrace die energy Reusability, be applicable to batch production, reduces computer hard disc rack for disc manufacturing cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of computer hard disc rack for disc;
Fig. 2 is the shaping flow chart of computer hard disc rack for disc;
Fig. 3 is the structural representation that essence rushes blank;
Fig. 4 is the structural representation of computer hard disc rack for disc upsetting pressure shaping dies;
Fig. 5 is first half-finished structural representation;
Fig. 6 is second half-finished structural representation;
Fig. 7 is the 3rd half-finished structural representation;
Fig. 8 is the 4th half-finished structural representation;
Fig. 9 is the structural representation of the first forming terrace die;
Figure 10 is the structural representation of the second forming terrace die;
Figure 11 is the structural representation of the 3rd forming terrace die;
Figure 12 is the structural representation of the first female die for forming;
Figure 13 is the structural representation of the second female die for forming;
Figure 14 is the structural representation of the 3rd female die for forming.
In figure: 1, computer hard disc rack for disc, 1-1, boss, 1-2, profiled holes, 1-3, arc rack for disc main body, 1-5, small arc-shaped, 1-4, arc body, 1-6, circular hole, 1-7, breach, 2, essence rushes blank, 2-1, blank small arc-shaped, 2-2, blank obform body, 2-3, bracket-hairs blank main body, 3, first semi-finished product, 3-1, first semi-finished product boss, 3-2, first arc semi-finished product main body, 3-4, first semi-finished product small arc-shaped, 4, second semi-finished product, 4-1, second semi-finished product boss, 4-2, second arc semi-finished product main body, 4-4, second semi-finished product small arc-shaped, 5, 3rd semi-finished product, 5-1, 3rd semi-finished product boss, 5-2, 3rd arc semi-finished product main body, 5-4, 3rd semi-finished product small arc-shaped, 5-5, 3rd semi-finished product breach, 6, 4th semi-finished product, 6-1, 4th semi-finished product boss, 6-2, 4th semi-finished product irregularly-shaped hole, 6-3, 4th arc semi-finished product main body, 6-5, 4th semi-finished product small arc-shaped, 6-6, 4th semi-finished product circular hole, 8, upper bolster, 9, upper padding plate, 10, upper mounted plate, 11, balancing pole, 12, forming terrace die, 13, guide pillar, 14, guide pin bushing, 15, female die for forming, 16, head part core, 17, push rod, 18, die frame, 19, lower bolster, 20, lower fagging, 21, push pedal, 22, die shoe, 23, elastomer, 15a, first female die for forming, 15a-1, first circular die main body, 15a-2, first mold insert, 15a-3, first die cavity, 15a-4, first groove, 15b, second female die for forming, 15b-1, second circular die main body, 15b-2, second mold insert, 15b-3, second die cavity, 15b-4, second groove, 15c, 3rd female die for forming, 15c-1, 3rd circular die main body, 15c-2, 3rd mold insert, 15c-3, 3rd die cavity, 15c-4, 3rd groove, 12a, first forming terrace die, 12a-1, first punch groove, 12a-3, first arc boss, 12a-2, first projection, 12a-4, first circular arc boss, 12b, second forming terrace die, 12b-1, second punch groove, 12b-3, second arc boss, 12b-2, second projection, 12b-4, second circular arc boss, 12c, 3rd forming terrace die, 12c-1, 3rd punch groove, 12c-3, 3rd arc boss, 12c-2, 3rd projection, 12c-4, three-arc boss, 12c-5, 3rd punch breach projection.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further.
See Fig. 1-Figure 14, a kind of method that computer hard disc rack for disc is shaped, it comprises the steps:
Step one, essence rush blank
Adopt the precision punching method of one-piece moule to obtain essence and rush blank 2, described essence is rushed blank 2 and is comprised bracket-hairs blank main body 2-3, the outward flange of described bracket-hairs blank main body 2-3 is provided with blank obform body 2-2, is provided with blank small arc-shaped 2-1 between described bracket-hairs blank main body 2-3 and described blank obform body 2-2;
Essence rushes the profile tolerance of blank 2 in 0.1mm, stamping-out face serviceability rate more than 90%, adopts kerosene to make lubricant, is conducive to the cleaning of later process, blank small arc-shaped 2-1 outline than the little 8-10mm of the small arc-shaped 1-5 of computer hard disc rack for disc 1 (in the preferred embodiment, blank small arc-shaped 2-1 outline 10mm less of the small arc-shaped 1-5 of computer hard disc rack for disc 1), bracket-hairs blank main body 2-3 internal diameter R0 than the little 8-10mm of the internal diameter R of the arc rack for disc main body 1-3 of computer hard disc rack for disc 1 (in the preferred embodiment, bracket-hairs blank main body 2-3 internal diameter R0 10mm less of the internal diameter R of arc rack for disc main body 1-3), essence all the other profiles (blank obform body 2-2) of rushing blank 2 than the little 2-3mm of the profile of the boss 1-1 of computer hard disc rack for disc 1 (in the preferred embodiment, essence rushes all the other profiles 2mm less of the profile of the boss 1-1 of computer hard disc rack for disc 1 of blank 2),
Step 2, first time upsetting pressure are shaped
First female die for forming 15a and the first forming terrace die 12a of computer hard disc rack for disc upsetting pressure shaping dies are installed, essence is rushed the first die cavity 15a-3 that blank 2 is placed in the first female die for forming 15a, under pressure, essence is rushed blank 2 and is extruded in the die cavity of computer hard disc rack for disc upsetting pressure shaping dies, essence is rushed blank 2 part and is formed local crowning, another part outwardly increases the area at plane place, and first time upsetting pressure obtains the first semi-finished product 3 after being shaped;
The outline of the first semi-finished product boss 3-1 of the first semi-finished product 3 is identical with the outline of the boss 1-1 of computer hard disc rack for disc 1, first semi-finished product boss 3-1 than boss 1-1 height 0.8-1.1mm (in the preferred embodiment, the thick 1mm of Thickness Ratio boss 1-1 of the first semi-finished product boss 3-1, the thickness of the first semi-finished product boss 3-1 is 5.4 ± 0.1mm, the large 10-15% of area of the area ratio boss 1-1 of the first semi-finished product boss 3-1, the first arc semi-finished product main body 3-2 1.1-1.3mm (thickness of first arc semi-finished product main body 3-2 be 2.75 ± 0.1mm) thicker in the arc rack for disc main body 1-3 of computer hard disc rack for disc 1 of the first semi-finished product 3, the large 0.3-0.6mm(of radius of the radius ratio small arc-shaped 1-5 of the first semi-finished product small arc-shaped 3-4 on the outline of the first arc semi-finished product main body 3-2 in the preferred embodiment, the large 0.36mm of radius of the radius ratio small arc-shaped 1-5 of the first semi-finished product small arc-shaped 3-4 on the first arc semi-finished product main body 3-2 outline), the internal diameter Ra of the first arc semi-finished product main body 3-2 than the large 8-10mm of the internal diameter R of the arc rack for disc main body of computer hard disc rack for disc 1 (in the preferred embodiment, the internal diameter Ra 9mm larger than the internal diameter R of the arc rack for disc main body of computer hard disc rack for disc 1 of the first arc semi-finished product main body 3-2),
Step 3, annealing
Be placed in heat-treatment furnace by first semi-finished product 3 and carry out annealing in process, annealing process is that 280 DEG C of insulations are warmed up to 335 DEG C of insulations 7 hours after 2 hours; This lehr attendant's artistic skill eliminates stress, and reduces the sclerosis after hardness and upsetting pressure, is convenient to subsequent handling and is shaped, improve the plasticity of the first semi-finished product 3;
Step 4, second time upsetting pressure are shaped
Take out the first female die for forming 15a and the first forming terrace die 12a of computer hard disc rack for disc upsetting pressure shaping dies, second female die for forming 15b and the second forming terrace die 12b is installed, the first semi-finished product 3 after annealing in process are placed in the second die cavity 15b-3 of the second female die for forming 15b, under pressure, the first semi-finished product 3 after annealing extrude in the die cavity of computer hard disc rack for disc upsetting pressure shaping dies, first semi-finished product 3 part continues to flow to local crowning, ensure that it thickens shaping, another part continues the area outwardly increasing plane place, the second semi-finished product 4 are obtained after second time upsetting pressure is shaped, the outline of the second semi-finished product boss 4-1 of the second semi-finished product 4 is identical with the outline of the boss 1-1 of computer hard disc rack for disc 1, second semi-finished product boss 4-1 than the thick 1.0-1.2mm of boss 1-1 (in the preferred embodiment, the thickness of the second semi-finished product boss 4-1 of the second semi-finished product 4 is 5.5 ± 0.06mm, second semi-finished product boss 4-1 of the second semi-finished product 4 is than the boss 1-1 height 1.15mm of computer hard disc rack for disc 1), the large 3-6%(of area of the area ratio boss 1-1 of the second semi-finished product boss 4-1 in the preferred embodiment, the area large 5% of the boss of the area ratio computer hard disc rack for disc 1 of the second semi-finished product boss 4-1 of the second semi-finished product 4), second arc semi-finished product main body 4-2 of the second semi-finished product 4 than the thick 0.5-0.7mm of the arc rack for disc main body 1-3 of computer hard disc rack for disc 1 (in the preferred embodiment, the thickness of the second arc semi-finished product main body 4-2 of the second semi-finished product 4 is 2.25 ± 0.06mm, the second arc semi-finished product main body 4-2 0.67mm thicker in the arc rack for disc main body 1-3 of computer hard disc rack for disc 1 of the second semi-finished product 4), the large 0.8-1.0mm(of radius of the small arc-shaped 1-5 of the radius ratio computer hard disc rack for disc 1 of the second semi-finished product small arc-shaped 4-4 on the second arc semi-finished product main body 4-2 in the preferred embodiment, the large 0.9mm of radius of the small arc-shaped 1-5 of the radius ratio computer hard disc rack for disc 1 of the second semi-finished product small arc-shaped 4-4 of the second arc semi-finished product main body 4-2), the internal diameter Rb of the second arc semi-finished product main body 4-2 than the large 4-7mm of the internal diameter R of the arc rack for disc main body of computer hard disc rack for disc 1 (in the preferred embodiment, the internal diameter Rb 5mm larger than the internal diameter R of the arc rack for disc main body 1-3 of computer hard disc rack for disc 1 of the second arc semi-finished product main body 4-2),
Step 5, third time upsetting pressure are shaped
Take out the second female die for forming 15b and the second forming terrace die 12b of computer hard disc rack for disc upsetting pressure shaping dies, 3rd female die for forming 15c and the 3rd forming terrace die 12c is installed, second semi-finished product 4 are placed in the 3rd die cavity 15c-3 of the 3rd female die for forming 15c, under pressure, second semi-finished product 4 extrude in the die cavity of computer hard disc rack for disc upsetting pressure shaping dies, protruding and planar section material is squeezed outwardly simultaneously, thickness reduces, upsetting pressure obtains the 3rd semi-finished product 5 after being shaped, 3rd semi-finished product 5 have not allowed interlayer, the defects such as pit, the outline of the 3rd semi-finished product boss 5-1 is identical with the outline of the boss 1-1 of computer hard disc rack for disc 1, 3rd semi-finished product boss 5-1 than boss 1-1 height 0.65-0.75mm (in the preferred embodiment, the thickness of the 3rd semi-finished product boss 5-1 is 5.05 ± 0.05mm, 3rd semi-finished product boss 5-1 is than boss 1-1 height 0.7mm), the large 3-6%(of area of the area ratio boss 1-1 of the 3rd semi-finished product boss 5-1 in the preferred embodiment, the area large 5% of the area ratio boss 1-1 of the 3rd semi-finished product boss 5-1), the area of the 3rd semi-finished product boss 5-1 and the area equation of the second semi-finished product boss 4-1, 3rd arc semi-finished product main body 5-2 of the 3rd semi-finished product 5 than the thick 0.35-0.45mm of the arc rack for disc main body 1-3 of computer hard disc rack for disc 1 (in the preferred embodiment, the thickness of the 3rd arc semi-finished product main body 5-2 of the 3rd semi-finished product 5 is 2 ± 0.04mm, the 3rd arc semi-finished product main body 5-2 0.42mm thicker in the arc rack for disc main body 1-3 of computer hard disc rack for disc 1 of the 3rd semi-finished product 5), the 3rd semi-finished product small arc-shaped 5-4 on 3rd arc semi-finished product main body 5-2 than the large 1.0-1.1mm(of the radius of small arc-shaped 1-5 in the preferred embodiment, 3rd semi-finished product small arc-shaped 5-4 1mm larger than the radius of small arc-shaped 1-5), the internal diameter Rc of the 3rd arc semi-finished product main body 5-2 than the little 1-1.5mm of the internal diameter R of the arc rack for disc main body of computer hard disc rack for disc 1 (in the preferred embodiment, the internal diameter Rc 1mm less of the internal diameter R of the arc rack for disc main body 1-3 of computer hard disc rack for disc 1 of the 3rd arc semi-finished product main body 5-2), 3rd semi-finished product breach 5-5 is identical with the breach 1-7 of computer hard disc rack for disc 1,
Step 6, smart punching, blanking are carried out to the 3rd semi-finished product 5
Obtain the 4th semi-finished product 6, stamping-out face serviceability rate more than 90% after smart punching, blank-forming are carried out to the 3rd semi-finished product 5, adopt kerosene to make lubricant, be conducive to the cleaning of later process; 4th semi-finished product boss 6-1 of the 4th semi-finished product 6 is identical with the outline of the boss 1-1 of computer hard disc rack for disc 1,4th semi-finished product boss 6-1 than the thick 0.65-0.75mm of boss 1-1 (in the preferred embodiment, the thickness of the 4th semi-finished product boss 6-1 is 5.05 ± 0.05mm, 4th semi-finished product boss 6-1 0.7mm thicker in boss 1-1), the area of the 4th semi-finished product boss 6-1 and the area equation of boss 1-1; 4th arc semi-finished product main body 6-3 of the 4th semi-finished product 6 than the thick 0.35-0.45mm of the arc rack for disc main body 1-3 of computer hard disc rack for disc 1 (in the preferred embodiment, the thickness of the 4th arc semi-finished product main body 6-3 is 2 ± 0.04mm, the 4th arc semi-finished product main body 6-3 0.42mm thicker in the arc rack for disc main body 1-3 of computer hard disc rack for disc 1 of the 4th semi-finished product 6), circular hole on 4th semi-finished product boss 6-1 or the 4th semi-finished product irregularly-shaped hole 6-2 identical with the circular hole on boss 1-1 or irregularly-shaped hole 1-2, the 4th semi-finished product circular hole 6-6 on 4th arc semi-finished product main body 6-3 is identical with the circular hole 1-6 on arc rack for disc main body 1-3, the radius of the 4th semi-finished product small arc-shaped 6-4 on the 4th arc semi-finished product main body 6-3 outline is identical with the radius of the small arc-shaped 1-5 of computer hard disc rack for disc 1, the internal diameter of the 4th arc semi-finished product main body 6-3 is identical with the internal diameter of the arc rack for disc main body 1-3 of computer hard disc rack for disc 1,4th semi-finished product breach 6-7 of the 4th semi-finished product 6 is identical with the breach 1-7 of computer hard disc rack for disc 1,
Step 7, stress relief annealing
4th semi-finished product 6 carry out stress relief annealing process in heat-treatment furnace, and annealing process is holding temperature is 235 ± 5 DEG C, temperature retention time 100 minutes;
Step 8, machined (finish-milling)
NC machining center machine tool is adopted to carry out finish-milling processing to the 4th semi-finished product 6, reach the thickness deviation of the boss 1-1 of computer hard disc rack for disc 1 and arc rack for disc main body 1-3, form and position tolerance, the depth of parallelism, profile tolerance, surface roughness and local tapering, obtain the rack for disc computer hard disc rack for disc 1 after being shaped, the height of the boss 1-1 of computer hard disc rack for disc 1 is 4.35 ± 0.015mm, and the height of arc rack for disc main body 1-3 is 1.58 ± 0.015mm.Process tool uses ceramic tip, and double layered cutter group is cut simultaneously, improves service life.
In this method, computer hard disc rack for disc upsetting pressure shaping dies used comprises mold and bed die, described mold comprises upper bolster 8, described upper bolster 8 has upper padding plate 9, described upper padding plate 9 has upper mounted plate 10, and fixed plate 10 is provided with guide pillar 13, forming terrace die 12, balancing pole 11;
Described bed die comprises die shoe 22, described die shoe 22 is provided with lower fagging 20, described lower fagging 20 is provided with lower bolster 19, described lower bolster 19 is provided with die frame 18, female die for forming 15 is provided with in described die frame 18, described die frame 18 and lower bolster 19 are provided with the guide pin bushing 14 suitable with guide pillar 13, and described die frame 18, lower bolster 19, lower fagging 20 are provided with the hole suitable with balancing pole 11;
Described forming terrace die 12 comprises 3 forming terrace dies, be respectively the first forming terrace die 12a, the second forming terrace die 12b, the 3rd forming terrace die 12c, described female die for forming 15 comprises 3 female die for formings, is respectively the first female die for forming 15a, second female die for forming 15b, the 3rd female die for forming 15c.
In the present invention, conveniently install female die for forming 15, elastomer 23 and push pedal 21 can be provided with in die shoe 22, described push pedal 21 is placed on elastomer 23, described push pedal 23 is provided with push rod 17, described push rod 17 is connected with head part core 16 through after lower fagging 20, lower bolster 19, described head part core 16 is connected with female die for forming 15, during use, elastomer 23 promotes push pedal 21, thus drives push rod 17 to move up, and push rod 17 promotes head part core 16 and moves up, thus female die for forming 15 is ejected, facilitate exchanging for and installation of female die for forming.
In the present invention, described first female die for forming 15a comprises the first circular die main body 15a-1, described first circular die main body 15a-1 is provided with the first die cavity 15a-3 and the first mold insert 15a-2, described first circular die main body 15a-1 is provided with 2 symmetrically arranged first groove 15a-4, is convenient to the first mold insert 15a-2 and the first circular assembling of die main body 15a-1 and taking-up of maintenance; The outline of described first die cavity 15a-3 is identical with the outline of the first semi-finished product 3; The upper surface of described first mold insert 15a-2 is than the height 5-10mm of the height after the upper surface low 5-10mm(first mold insert 15a-2 assembling of the first circular die main body 15a-1 lower than the first circular die main body 15a-1), what be convenient to upsetting pressure shaping picks and places workpiece, in the preferred embodiment, the upper surface of the first mold insert 15a-2 5mm lower than the upper surface of the first circular die main body 15a-1; The degree of depth of described first die cavity 15a-3 is 8-10mm, and in the preferred embodiment, the degree of depth of the first die cavity 15a-3 is 8mm;
Described second female die for forming 15b comprises the second circular die main body 15b-1, described second circular die main body 15b-1 is provided with the second die cavity 15b-3 and the second mold insert 15b-2, described second circular die main body 15b-1 is provided with two symmetrically arranged second groove 15b-4, is convenient to the second mold insert 15b-2 and the second circular assembling of die main body 15b-1 and taking-up of maintenance; The outline of described second die cavity 15b-3 is identical with the outline of the second semi-finished product 4; The upper surface of described second mold insert 15b-2 is than the height 5-10mm of the height after the upper surface low 5-10mm(second mold insert 15b-2 assembling of the second circular die main body 15b-1 lower than the second circular die main body 15b-1), what be convenient to upsetting pressure shaping picks and places workpiece, in the preferred embodiment, the upper surface of the second mold insert 15b-2 5mm lower than the upper surface of the second circular die main body 15b-1; The degree of depth of described second die cavity 15b-3 is 8-10mm, and in the preferred embodiment, the degree of depth of the second die cavity 15b-3 is 8mm;
Described 3rd female die for forming 15c comprises the 3rd circular die main body 15c-1, described 3rd circular die main body 15c-1 is provided with the 3rd die cavity 15c-3 and the 3rd mold insert 15c-2, described 3rd circular die main body 15c-1 is provided with two symmetrically arranged 3rd groove 15c-4, is convenient to the 3rd mold insert 15c-2 and the 3rd circular assembling of die main body 15c-1 and the taking-up of maintenance; The outline of described 3rd die cavity 15c-3 is identical with the outline of the 3rd semi-finished product 5; The upper surface of described 3rd mold insert 15c-2 is than the height 5-10mm of the height after the low 5-10mm(of upper surface the 3rd mold insert 15c-2 assembling of the 3rd circular die main body 15c-1 lower than the 3rd circular die main body 15c-1), what be convenient to upsetting pressure shaping picks and places workpiece, in the preferred embodiment, the upper surface of the 3rd mold insert 15c-2 5mm lower than the upper surface of the 3rd circular die main body 15c-1; The degree of depth of described 3rd die cavity 15c-3 is 8mm.
In the present invention, first forming terrace die 12a comprises the first arc boss 12a-3, the surrounding of described first arc boss 12a-3 is provided with multiple first punch groove 12a-1(in the preferred embodiment, the surrounding of described first arc boss 12a-3 is provided with 3 the first punch groove 12a-1), be provided with multiple first circular arc boss 12a-4 between described first punch groove 12a-1 and the first arc boss 12a-3, described first circular arc boss 12a-4 and the first arc boss 12a-3 forms an entirety; Described first arc boss 12a-4 is provided with the first projection 12a-2; The profile of described first arc boss 12a-3 is identical with the profile of the first arc semi-finished product main body 3-2 of the first semi-finished product 3, the profile 0.1mm less of the profile of the first semi-finished product boss 3-1 of the first semi-finished product 3 of described first punch groove 12a-1; The degree of depth of described first punch groove 12a-1 is 2.5-3.5mm, and in the preferred embodiment, the degree of depth of the first punch groove 12a-1 is 3mm; The degree of depth of described first punch groove 12a-1 is deepened gradually;
Second forming terrace die 12b comprises the second arc boss 12b-3, the surrounding of described second arc boss 12b-3 is provided with multiple second punch groove 12b-1(in the preferred embodiment, the surrounding of described second arc boss 12b-3 is provided with 3 the second punch groove 12b-1), be provided with multiple second circular arc boss 12b-4 between described second punch groove 12b-1 and the second arc boss 12b-3, described second circular arc boss 12b-4 and the second arc boss 12b-3 forms an entirety; Described second arc boss 12b-3 is provided with the second projection 12b-2; The profile of described second arc boss 12b-3 is identical with the profile of the second arc semi-finished product main body 4-2 of the second semi-finished product 4, the profile 0.1mm less of the profile of the second semi-finished product boss 4-1 of the second semi-finished product 4 of described second punch groove 12b-1; The degree of depth of described second punch groove 12b-1 is 3.65-3.75mm, and in the preferred embodiment, the degree of depth of described second punch groove 12b-1 is 3.7mm; The degree of depth of described second punch groove 12b-1 is deepened gradually;
3rd forming terrace die 12c comprises the 3rd arc boss 12c-3, the surrounding of described 3rd arc boss 12c-3 is provided with multiple 3rd punch groove 12c-1(in the preferred embodiment, the surrounding of described 3rd arc boss 12c-3 is provided with 3 the 3rd punch groove 12c-1), be provided with multiple three-arc boss 12c-4 between described 3rd punch groove 12c-1 and the 3rd arc boss 12c-3, described three-arc boss 12c-4 and the 3rd arc boss 12c-3 forms an entirety; Described 3rd arc boss 12c-3 is provided with the 3rd projection 12c-2; The profile of described 3rd arc boss 12c-3 is identical with the profile of the 3rd arc semi-finished product main body 5-2 of the 3rd semi-finished product 5, the profile 0.1mm less of the profile of the 3rd semi-finished product boss 5-1 of the 3rd semi-finished product 5 of described 3rd punch groove 12c-1; The degree of depth of described 3rd punch groove 12c-1 is 0.4-0.6mm, and in the preferred embodiment, the degree of depth of the 3rd punch groove 12c-1 is 0.5mm; The degree of depth of described 3rd punch groove 12c-1 is deepened gradually; Described 3rd punch groove 12c-1 is provided with the 3rd punch breach projection 12c-5.
Computer hard disc rack for disc upsetting pressure shaping dies is suitable for 3 upsetting pressures and is shaped, and only need change corresponding forming terrace die 12, female die for forming 15, realize the gradual shaping of repeatedly upsetting pressure, ensures shaping form and precision.
Claims (10)
1. a computer hard disc rack for disc manufacturing process, is characterized in that it comprises the steps:
Step one, essence rush blank
Adopt the precision punching method of one-piece moule to obtain essence and rush blank, described essence is rushed blank and is comprised bracket-hairs blank main body, the outline of described bracket-hairs blank main body there is blank obform body, between described bracket-hairs blank main body and described blank obform body, has blank small arc-shaped;
Step 2, first time upsetting pressure are shaped
First female die for forming and first forming terrace die of computer hard disc rack for disc upsetting pressure shaping dies are installed, essence is rushed the first die cavity that blank is placed in the first female die for forming, under pressure, essence rushes blank upsetting pressure in the die cavity of computer hard disc rack for disc upsetting pressure shaping dies, and upsetting pressure obtains the first semi-finished product after being shaped;
Described first semi-finished product comprise the first arc semi-finished product main body, the outline of described first arc semi-finished product main body has the first semi-finished product boss, has the first semi-finished product small arc-shaped between the first arc semi-finished product main body and the first semi-finished product boss;
Step 3, annealing
Be placed in heat-treatment furnace by first semi-finished product and carry out annealing in process, annealing process is that 250 DEG C-300 DEG C insulations are warmed up to 300 DEG C-400 DEG C insulation 5-9 hour after 1-3 hour;
Step 4, second time upsetting pressure are shaped
Take out the first female die for forming and first forming terrace die of computer hard disc rack for disc upsetting pressure shaping dies, second female die for forming and the second forming terrace die are installed, the first semi-finished product after annealing in process are placed in the second die cavity of the second female die for forming, under pressure, the upsetting pressure in the die cavity of computer hard disc rack for disc upsetting pressure shaping dies of the first semi-finished product after annealing, upsetting pressure obtains the second semi-finished product after being shaped;
Described second semi-finished product comprise the second arc semi-finished product main body, the outline of described second arc semi-finished product main body has the second semi-finished product boss, has the second semi-finished product small arc-shaped between the second arc semi-finished product main body and the second semi-finished product boss;
Step 5, third time upsetting pressure are shaped
Take out the second female die for forming and second forming terrace die of computer hard disc rack for disc upsetting pressure shaping dies, 3rd female die for forming and the 3rd forming terrace die are installed, second semi-finished product are placed in the 3rd die cavity of the 3rd female die for forming, under pressure, the upsetting pressure in the die cavity of computer hard disc rack for disc upsetting pressure shaping dies of second semi-finished product, upsetting pressure obtains the 3rd semi-finished product after being shaped;
Described 3rd semi-finished product comprise the 3rd arc semi-finished product main body, the outline of described 3rd arc semi-finished product main body there is the 3rd semi-finished product boss, there is the 3rd semi-finished product small arc-shaped between 3rd arc semi-finished product main body and the 3rd semi-finished product boss, the 3rd semi-finished product boss has the 3rd semi-finished product breach;
Step 6, smart punching, blanking are carried out to the 3rd semi-finished product
3rd semi-finished product obtain the 4th semi-finished product after smart punching, blank-forming;
Described 4th semi-finished product comprise the 4th arc semi-finished product main body, the outline of described 4th arc semi-finished product main body there is the 4th semi-finished product boss, the 4th semi-finished product small arc-shaped is had between 4th arc semi-finished product main body and the 4th semi-finished product boss, 4th semi-finished product boss there is the 4th semi-finished product breach, 4th arc semi-finished product main body there is the 4th semi-finished product circular hole, the 4th semi-finished product boss has circular hole or the 4th semi-finished product irregularly-shaped hole;
Step 7, stress relief annealing
4th semi-finished product carry out stress relief annealing process in heat-treatment furnace, and annealing process is holding temperature is 200 DEG C-300 DEG C, temperature retention time 80-120 minute;
Step 8, by annealing after the 4th semi-finished product carry out machined
Adopt NC machining center machine tool to carry out finish-milling processing to the 4th semi-finished product, obtain the rack for disc computer hard disc rack for disc after being shaped.
2. computer hard disc rack for disc manufacturing process as claimed in claim 1, is characterized in that:
In step one, the outline 8-10mm less of the outline of the small arc-shaped of computer hard disc rack for disc of described blank small arc-shaped; The outline of blank obform body than computer hard disc rack for disc the little 2-3mm of the profile of boss; The internal diameter 8-10mm less of the internal diameter of the arc rack for disc main body of computer hard disc rack for disc 1 of bracket-hairs blank main body 2-3;
In step 2, the outline of described first semi-finished product boss is identical with the outline of the boss of computer hard disc rack for disc, the first semi-finished product boss 0.8-1.1mm thicker in boss; First arc semi-finished product main body 1.1-1.3mm thicker in the arc rack for disc main body of computer hard disc rack for disc; The large 0.3-0.6mm of radius of the small arc-shaped of the radius ratio computer hard disc rack for disc of the first semi-finished product small arc-shaped; The internal diameter 8-10mm larger than the internal diameter of the arc rack for disc main body of computer hard disc rack for disc of the first arc semi-finished product main body;
In step 4, the outline of described second semi-finished product boss is identical with the outline of the boss of computer hard disc rack for disc, the second semi-finished product boss 1.0-1.2mm thicker in the boss of computer hard disc rack for disc; The large 3-6% of area of the boss of the area ratio computer hard disc rack for disc of the second semi-finished product boss; Second arc semi-finished product main body 0.5-0.7mm thicker in the arc rack for disc main body of computer hard disc rack for disc; The large 0.8-1.0mm of radius of the small arc-shaped of the radius ratio computer hard disc rack for disc of the second semi-finished product small arc-shaped; The internal diameter 4-7mm larger than the internal diameter of the arc rack for disc main body of computer hard disc rack for disc 1 of the second arc semi-finished product main body;
In step 5, the outline of the 3rd semi-finished product boss is identical with the outline of the boss of computer hard disc rack for disc, and the 3rd semi-finished product boss 0.65-0.75mm thicker in boss; The large 3-6% of area of the area ratio boss of the 3rd semi-finished product boss, the area of the 3rd semi-finished product boss and the area equation of the second semi-finished product boss; 3rd arc semi-finished product main body 0.35-0.45mm thicker in the arc rack for disc main body of computer hard disc rack for disc; The large 1.0-1.1mm of radius of the radius ratio small arc-shaped of the 3rd semi-finished product small arc-shaped; The internal diameter 1-1.5mm less of the internal diameter of the arc rack for disc main body of computer hard disc rack for disc of the 3rd arc semi-finished product main body; 3rd semi-finished product breach is identical with the breach of computer hard disc rack for disc;
In step 6, the 4th semi-finished product boss 0.65-0.75mm thicker in boss, the area of the 4th semi-finished product boss and the area equation of boss; 4th arc semi-finished product main body 0.35-0.45mm thicker in the arc rack for disc main body of computer hard disc rack for disc; The radius of the 4th semi-finished product small arc-shaped on the 4th arc semi-finished product main body outline is identical with the radius of the small arc-shaped of computer hard disc rack for disc; The internal diameter of the 4th arc semi-finished product main body is identical with the internal diameter of the arc rack for disc main body of computer hard disc rack for disc, and the 4th half-finished 4th semi-finished product breach is identical with the breach of computer hard disc rack for disc.
3. computer hard disc rack for disc manufacturing process as claimed in claim 2, is characterized in that:
In step one, the outline 10mm less of the outline of the small arc-shaped of computer hard disc rack for disc of described blank small arc-shaped; The outline of blank obform body than computer hard disc rack for disc the little 2mm of the profile of boss; The internal diameter 10mm less of the internal diameter of the arc rack for disc main body of computer hard disc rack for disc 1 of bracket-hairs blank main body 2-3;
In step 2, the outline of described first semi-finished product boss is identical with the outline of the boss of computer hard disc rack for disc, the first semi-finished product boss 1mm thicker in boss; First arc semi-finished product main body 1.2mm thicker in the arc rack for disc main body of computer hard disc rack for disc; The large 0.36mm of radius of the small arc-shaped of the radius ratio computer hard disc rack for disc of the first semi-finished product small arc-shaped; The internal diameter 9mm larger than the internal diameter of the arc rack for disc main body of computer hard disc rack for disc of the first arc semi-finished product main body;
In step 4, the outline of described second semi-finished product boss is identical with the outline of the boss of computer hard disc rack for disc, the second semi-finished product boss 1.15mm thicker in the boss of computer hard disc rack for disc; The area large 5% of the boss of the area ratio computer hard disc rack for disc of the second semi-finished product boss; Second arc semi-finished product main body 0.67mm thicker in the arc rack for disc main body of computer hard disc rack for disc; The large 0.9mm of radius of the small arc-shaped of the radius ratio computer hard disc rack for disc of the second semi-finished product small arc-shaped; The internal diameter 5mm larger than the internal diameter of the arc rack for disc main body of computer hard disc rack for disc 1 of the second arc semi-finished product main body;
In step 5, the outline of the 3rd semi-finished product boss is identical with the outline of the boss of computer hard disc rack for disc, and the 3rd semi-finished product boss 0.7mm thicker in boss; The area of area the large 5%, the 3rd semi-finished product boss of the area ratio boss of the 3rd semi-finished product boss and the area equation of the second semi-finished product boss; 3rd arc semi-finished product main body 0.42mm thicker in the arc rack for disc main body of computer hard disc rack for disc; The large 1mm of radius of the radius ratio small arc-shaped of the 3rd semi-finished product small arc-shaped; The internal diameter 1mm less of the internal diameter of the arc rack for disc main body of computer hard disc rack for disc of the 3rd arc semi-finished product main body; 3rd semi-finished product breach is identical with the breach of computer hard disc rack for disc;
In step 6, the 4th semi-finished product boss 0.65-0.75mm thicker in boss, the area of the 4th semi-finished product boss and the area equation of boss; 4th arc semi-finished product main body 0.35-0.45mm thicker in the arc rack for disc main body of computer hard disc rack for disc; The radius of the 4th semi-finished product small arc-shaped on the 4th arc semi-finished product main body outline is identical with the radius of the small arc-shaped of computer hard disc rack for disc; The internal diameter of the 4th arc semi-finished product main body is identical with the internal diameter of the arc rack for disc main body of computer hard disc rack for disc, and the 4th half-finished 4th semi-finished product breach is identical with the breach of computer hard disc rack for disc.
4. computer hard disc rack for disc manufacturing process as claimed in claim 1, is characterized in that:
In step one, adopt kerosene as lubricant;
In step 6, adopt kerosene as lubricant.
5. computer hard disc rack for disc manufacturing process as claimed in claim 1, is characterized in that:
In step 3, annealing process is that 280 DEG C of insulations are warmed up to 335 DEG C of insulations 7 hours after 2 hours;
In step 7, annealing process is holding temperature is 235 ± 5 DEG C, temperature retention time 100 minutes.
6. computer hard disc rack for disc manufacturing process as claimed in claim 1, is characterized in that:
Described computer hard disc rack for disc upsetting pressure shaping dies comprises mold and bed die;
Described mold comprises upper bolster, and described upper bolster has upper mounted plate, and fixed plate is provided with guide pillar, forming terrace die, balancing pole;
Described bed die comprises die shoe, described die shoe is provided with lower fagging, and described lower fagging is provided with die frame, is provided with female die for forming in described die frame, described die frame is provided with the guide pin bushing suitable with guide pillar, and described die frame is provided with the hole suitable with balancing pole;
Described forming terrace die comprises 3 forming terrace dies, and be respectively the first forming terrace die, the second forming terrace die, the 3rd forming terrace die, described female die for forming comprises 3 female die for formings, is respectively the first female die for forming, the second female die for forming, the 3rd female die for forming.
7. computer hard disc rack for disc manufacturing process as claimed in claim 6, is characterized in that:
Be provided with elastomer and push pedal in described die shoe, described push pedal is placed on elastomer, and described push pedal is provided with push rod, and described push rod is connected with head part core through after lower fagging, and described head part core contacts with female die for forming.
8. computer hard disc rack for disc manufacturing process as claimed in claim 6, is characterized in that: be provided with upper padding plate between described upper bolster and upper mounted plate, is provided with lower bolster between described lower fagging and die frame.
9. computer hard disc rack for disc manufacturing process as claimed in claim 6, is characterized in that:
Described first female die for forming comprises the first circular die main body, and described first circular die main body is provided with the first die cavity and the first mold insert, and described first circular die main body is provided with the first groove; The outline of described first die cavity is identical with first half-finished outline; The upper surface 5-10mm lower than the upper surface of the first circular die main body of described first mold insert; The degree of depth of described first die cavity is 8-10mm;
Described second female die for forming comprises the second circular die main body, and described second circular die main body is provided with the second die cavity and the second mold insert, and described second circular die main body is provided with the second groove; The outline of described second die cavity is identical with second half-finished outline; The upper surface 5-10mm lower than the upper surface of the second circular die main body of described second mold insert; The degree of depth of described second die cavity is 8-10mm;
Described 3rd female die for forming comprises the 3rd circular die main body, and described 3rd circular die main body is provided with the 3rd die cavity and the 3rd mold insert, and described 3rd circular die main body is provided with the 3rd groove; The outline of described 3rd die cavity is identical with the 3rd half-finished outline; The upper surface 5-10mm lower than the upper surface of the 3rd circular die main body of described 3rd mold insert; The degree of depth of described 3rd die cavity is 8-10mm.
10. computer hard disc rack for disc manufacturing process as claimed in claim 6, is characterized in that:
First forming terrace die comprises the first arc boss, the surrounding of described first arc boss is provided with multiple first punch groove, be provided with multiple first circular arc boss between described first punch groove and the first arc boss, described first circular arc boss and the first arc boss form an entirety; Described first arc boss is provided with the first projection; The profile of described first arc boss is identical with the profile of first half-finished first arc semi-finished product main body, the little 0.1mm of profile of the profile first semi-finished product boss more half-finished than first of described first punch groove; The degree of depth of described first punch groove is 2.5-3.5mm; The degree of depth of described first punch groove is deepened gradually;
Second forming terrace die comprises the second arc boss, the surrounding of described second arc boss is provided with multiple second punch groove, be provided with multiple second circular arc boss between described second punch groove and the second arc boss, described second circular arc boss and the second arc boss form an entirety; Described second arc boss is provided with the second projection; The profile of described second arc boss is identical with the profile of second half-finished second arc semi-finished product main body, the little 0.1mm of profile of the profile second semi-finished product boss more half-finished than second of described second punch groove; The degree of depth of described second punch groove is 3.65-3.75mm; The degree of depth of described second punch groove is deepened gradually;
3rd forming terrace die comprises the 3rd arc boss, the surrounding of described 3rd arc boss is provided with multiple 3rd punch groove, be provided with multiple three-arc boss between described 3rd punch groove and the 3rd arc boss, described three-arc boss and the 3rd arc boss form an entirety; Described 3rd arc boss is provided with the 3rd projection; The profile of described 3rd arc boss is identical with the profile of the 3rd half-finished 3rd arc semi-finished product main body, the little 0.1mm of profile of the profile three semi-finished product boss more half-finished than the 3rd of described 3rd punch groove; The degree of depth of described 3rd punch groove is 0.4-0.6mm; The degree of depth of described 3rd punch groove is deepened gradually; Described 3rd punch groove is provided with the 3rd punch breach projection.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06190493A (en) * | 1992-12-22 | 1994-07-12 | Mazda Motor Corp | Manufacture of forging |
| CN1824425A (en) * | 2005-02-21 | 2006-08-30 | 徐名钧 | Processing method of magnesium alloy product and its manufacturing process |
| CN1850433A (en) * | 2006-05-22 | 2006-10-25 | 苏州有色金属加工研究院 | Magnesium alloy product punching shaping method |
| KR20120032147A (en) * | 2010-09-28 | 2012-04-05 | 주식회사 코우 | Yoke manufacturing method |
| CN103506808A (en) * | 2012-06-27 | 2014-01-15 | 廖述源 | Manufacturing method and product of slim shell |
-
2014
- 2014-12-31 CN CN201410845950.4A patent/CN104551674B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06190493A (en) * | 1992-12-22 | 1994-07-12 | Mazda Motor Corp | Manufacture of forging |
| CN1824425A (en) * | 2005-02-21 | 2006-08-30 | 徐名钧 | Processing method of magnesium alloy product and its manufacturing process |
| CN1850433A (en) * | 2006-05-22 | 2006-10-25 | 苏州有色金属加工研究院 | Magnesium alloy product punching shaping method |
| KR20120032147A (en) * | 2010-09-28 | 2012-04-05 | 주식회사 코우 | Yoke manufacturing method |
| CN103506808A (en) * | 2012-06-27 | 2014-01-15 | 廖述源 | Manufacturing method and product of slim shell |
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Denomination of invention: Forming method of computer hard disk rack Effective date of registration: 20220629 Granted publication date: 20170118 Pledgee: Bank of China Limited Wuhan Qingshan sub branch Pledgor: WUHAN HUAXIA FINE-BLANKING TECHNOLOGY CO.,LTD. Registration number: Y2022420000207 |
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